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11. 发明专利

DE69308794T2 未知
公开(公告)号：DE69308794T2
公开(公告)日：1997-10-23
申请号：DE69308794
申请日：1993-12-20
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： YOSHIZAKI KOUJI , ITOU TAKAAKI , HIRAYAMA HIROSHI , NAGAMI TETSUO , SANADA MASAKATSU , WATANABE KIYOHIKO , FUJISHIRO OSAMU , YOSHINAGA TOHRU , SHINOHARA YUKIHIRO , KAWABE YASUYUKI , IGASHIRA TOSHIHIKO , IZAWA AKIHIRO , ICHIKAWA HIROAKI
IPC分类号： F01N3/20 , F01N3/28 , F01N13/02 , H05B3/10

12. 发明专利

DE69308794D1 未知
公开(公告)号：DE69308794D1
公开(公告)日：1997-04-17
申请号：DE69308794
申请日：1993-12-20
申请人： NIPPON SOKEN , TOYOTA MOTOR CO LTD
发明人： YOSHIZAKI KOUJI , ITOU TAKAAKI , HIRAYAMA HIROSHI , NAGAMI TETSUO , SANADA MASAKATSU , WATANABE KIYOHIKO , FUJISHIRO OSAMU , YOSHINAGA TOHRU , SHINOHARA YUKIHIRO , KAWABE YASUYUKI , IGASHIRA TOSHIHIKO , IZAWA AKIHIRO , ICHIKAWA HIROAKI
IPC分类号： F01N3/20 , F01N3/28 , F01N13/02 , H05B3/10

13. 发明专利

JP2000288391A CATALYST CARRIER AND CATALYST FOR CLEANING EXHAUST GAS 失效
公开(公告)号：JP2000288391A
公开(公告)日：2000-10-17
申请号：JP9585799
申请日：1999-04-02
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： KANAZAWA TAKAAKI , HIRAYAMA HIROSHI , SUZUKI SHIGEHARU , SUZUKI TADASHI , SOFUGAWA HIDEO , MORIKAWA AKIRA
IPC分类号： B01D53/94 , B01J23/10 , B01J23/63 , B01J32/00 , F01N3/08 , F01N3/10 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To improve the durability of OSC with the use of a compound oxide carrier and to suppress the peeling of a coat layer and the decrease of a specific surface area during a durability test. SOLUTION: The catalyst carrier comprises a mixture of a compound oxide which contains Al, Ce, and Zr and is prepared from salt solutions by a coprecipitation method and a heat resistant inorganic oxide, and the complex oxide and the inorganic oxide are mixed in a weight ratio of 5:3-2:3. By mixing the inorganic oxide, adhesion to a honeycomb base material is improved so that the peeling of a coat layer during a durability test can be suppressed.

14. 发明专利

JP2000015101A CATALYST FOR PURIFYING EXHAUST GAS 失效
公开(公告)号：JP2000015101A
公开(公告)日：2000-01-18
申请号：JP18464898
申请日：1998-06-30
申请人： TOYOTA MOTOR CORP , CATALER KK
发明人： IKEDA YASUO , HIRAYAMA HIROSHI , HAYASHI KIYOTAKA , MURATA KATSUYUKI
IPC分类号： B01D53/56 , B01D53/81 , B01D53/94 , B01J23/58 , B01J35/04
摘要： PROBLEM TO BE SOLVED: To suppress the sulfur poisoning of an NOx occluding material and to improve NOx purifying efficiency by forming a coated layer consisting of a porous oxide carrier carrying the NOx occluding material and a noble metal on the surface of a honeycomb shaped carrier base material and also forming another coated layer consisting of Rh/ZrO2. SOLUTION: The coated layer 2 consisting of the porous oxide carrier carrying respectively the NOx occluding material consisting of at least one kind selected among an alkali metal, an alkaline earth metal and a rare earth element and the noble metal is formed on the whole surface of a monolithic base material 1 formed in a form of the honeycomb. Then, another coated layer 3 consisting of Rh/ZrO2 carrying the rhodium on the zirconia is formed on the surface of the coated layer 2 within a prescribed range (for example 3.2% of total length) from an influent gas side end surface 10 of the monolithic base material 1. At this time, the coated layer 2 is formed mainly, for example, with Al2O3 powder and TiO2 powder and carries CeO2-ZrO2 composite oxide powder, Pt, Ba, K and Li.

15. 发明专利

JPH08332350A CATALYST FOR EXHAUST GAS PURIFICATION 失效
公开(公告)号：JPH08332350A
公开(公告)日：1996-12-17
申请号：JP14082995
申请日：1995-06-07
申请人： TOYOTA MOTOR CORP
发明人： HIRAYAMA HIROSHI , SUZUKI SHIGEHARU , ISHIBASHI KAZUNOBU
IPC分类号： B01D53/86 , B01D53/94 , B01J23/46
摘要： PURPOSE: To improve the activity at a low temperature and the durability of an exhaust gas purifying catalyst at a high temperature by depositing palladium at a specified high density in an upper stream side of a carrier. CONSTITUTION: A catalytic converter 1 is composed of a monolithic catalyst 2, an outer cylinder 10 to house the monolithic catalyst 2, and a pair of cones 11, 12 extended from the outer cylinder 10 in a conical shape. Platinum and rhodium are deposited in the whole length of the monolithic catalyst 2 and palladium is further deposited in the upper stream part 20 arranged in the exhaust gas flowing-in side of the catalytic converter 1. The deposited density of the palladium in the upper stream part 20 is set to be 7-20g per 1 liter volume of the upper stream part 20 of the carrier. Consequently, unburned HC can be lessened by the catalyst for exhaust gas purification from immediately after starting of an engine to the time when the engine is warmed up and at the same time, the emission of platinum and CO, HC, NOx carried in the whole body of the catalyst can be lowered and thus the catalytic converter has high three-dimentional purification performance.

16. 发明专利

JPH06320013A CATALYST CARRIER AND ITS PRODUCTION 失效
公开(公告)号：JPH06320013A
公开(公告)日：1994-11-22
申请号：JP13405393
申请日：1993-05-11
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP
发明人： DOI HARUO , INAGAKI SHINJI , FUKUSHIMA YOSHIAKI , FUKUMOTO KAZUHIRO , ONODA SEIJI , SUGIURA MASAHIRO , NAGAMI TETSUO , HIRAYAMA HIROSHI
IPC分类号： B01D53/86 , B01J21/16 , B01J35/04 , B01J35/10 , B01J37/12 , B01D53/36
摘要： PURPOSE:To produce a catalyst carrier having a large specific surface area and excellent in heat resistance. CONSTITUTION:The surface of a porous material having many pores 92 is coated with a metal oxide 1 to obtain the objective catalyst carrier 10. The porous material is a laminar silica porous body or a laminar silica-metal oxide porous body. The laminar silica porous body 9 has a structure formed by bending laminar sheets 91 each consisting of tetrahedrons of SiO4 and partially bonding the upper and lower sheets 91 and has many pores 92 between the layers. The metal oxide 1 is alumina, titania, zirconia, tin oxide, niobium oxide or boron oxide.

17. 发明专利

JPH05179939A ELECTRIFYING HEATING TYPE CATALYTIC CONVERTER 失效
公开(公告)号：JPH05179939A
公开(公告)日：1993-07-20
申请号：JP34486591
申请日：1991-12-26
申请人： TOYOTA MOTOR CORP
发明人： IGARASHI KOHEI , HIRAYAMA HIROSHI
IPC分类号： B01J35/02 , F01N3/20 , F01N3/24 , F01N3/28
摘要： PURPOSE:To shorten a time required for temperature rise up to catalytic active temperature in a heat generating territory, reduce electric energy required for the heating, and prevent remarkable cost up due to increase a supported quantity of catalyst. CONSTITUTION:A corrugated plate 1 of which both sides are formed with insulating coats, and a flat plate 2 are piled together and wound so as to form a metallic catalyst support 3. The corrugated plate 1 and the flat plate 2 are Joined together capably of being electrified in the center part territory 3a and the outer circumferential part territory 3b of the catalyst support 3, and the territory 3c between the joined territories 3a and 3b is formed as a non-joined territory. A supported quantity of catalyst per unit area in the non-joined area in the joined territory 3a or 3b.

18. 发明专利

JPH03196844A NONCIRCULAR METAL CARRIER AND ITS PRODUCTION 失效
公开(公告)号：JPH03196844A
公开(公告)日：1991-08-28
申请号：JP33891289
申请日：1989-12-27
申请人： NIPPON STEEL CORP , TOYOTA MOTOR CORP
发明人： ISHIKAWA YASUSHI , NAKAGAWA TOSHIKAZU , MIURA KAZUYUKI , YAGI AKIHIRO , TAKADA TOSHIHIRO , HIRAYAMA HIROSHI
IPC分类号： B01D53/86 , B01J35/04 , F01N3/28
摘要： PURPOSE:To prevent the deformation of a honeycomb body and to obtain a carrier having flat and corrugated sheets kept in regular contact with each other by winding flat and corrugated sheets superposed on each other around a core part similar in cross-sectional shape to an outer tube, housing and fixing the resulting honeycomb body in the noncircular outer tube. CONSTITUTION:An elliptical honeycomb body 1 composed of a core part 2 and a peripheral part 3 is housed and fixed in a noncircular outer tube. The core part 2 is a core body similar in cross-sectional shape to the outer tube and having a smaller cross section than the outer tube. The peripheral part 3 around the core part 2 is formed by winding corrugated and flat sheets superposed on each other around the core part 2. The honeycomb body 1 is not deformed, the flat and corrugated sheets are kept in regular contact with each other, a uniform cell structure is formed and a noncircular metal carrier such as an elliptical or triangular carrier is obtd.

19. 发明专利

JPH0240241A FORMATION OF FILLING-UP PART AND CARRYING LAYER ON MONOLITHIC CARRIER 失效
公开(公告)号：JPH0240241A
公开(公告)日：1990-02-09
申请号：JP18869988
申请日：1988-07-28
申请人： TOYOTA MOTOR CORP
发明人： HIRAYAMA HIROSHI
IPC分类号： B01D53/86 , B01J35/04 , B01J37/02
摘要： PURPOSE:To properly forming both a filling-up part and a carrying layer and to improve quality of a monolithic catalyst and to enable cost reduction by simultaneously forming both the filling-up part and the carrying body on the monolithic carrier for purifying exhaust gas. CONSTITUTION:The lower end surface W11 of a monolithic carrier W is allowed to abut against the upper end of the inner wall part 12a of a lower member 1 and an upper member 2 is allowed to abut against the upper end surface W21 and held by opposing the lower aperture 2a to a central space 3. Then slurry S2 for filling-up is fed and circulated to the ring-like space 4 of the member 1 with a pump 54. At this time, the liquid level of slurry S2 is held constant at the position higher than the upper end of the inner wall part 12a and therefore a filling-up part W5 is formed until the same position as the liquid level of slurry S2 in the lower outer peripheral part W12. Then slurry S1 for a carrying layer is fed to the upper inside W23 through the introduction port 2b of a slurry introducing pipe and stuck on the inner wall surface W4 by gravity and also allowed to flow down to the central space 3. Thereafter compressed air is fed from the lower aperture 2a to blow off excess slurry S1 remaining in the communication holes W3.

20. 发明专利

JPH01123638A METAL CARRIER FOR PURIFICATION CATALYST OF EXHAUST GAS 失效
公开(公告)号：JPH01123638A
公开(公告)日：1989-05-16
申请号：JP28337887
申请日：1987-11-10
申请人： TOYOTA MOTOR CORP
发明人： HIRAYAMA HIROSHI , TAKADA TOSHIHIRO
IPC分类号： B01J35/04 , F01N3/28
摘要： PURPOSE:To prevent a honeycomb structural body from being slipped by forming the honeycomb structural body which is divided into a plurality of parts toward the downstream side from the upstream side of exhaust gas and arranging both the upstream-side and downstream-side honeycomb structural bodies while superposing the lamellate end parts thereof. CONSTITUTION:A honeycomb structural body 1 is formed by arranging many cells 6 in a swirly shape which are formed by winding a unit structural body 4 in the swirly shape. The outer peripheral faces along the hole direction of the cells 6 are covered with a circular cylinder 7 and housed therein. Furthermore, supporting plates 8 are fixed to both ends of the cylinder 7 by welding and fitted and thereby the honeycomb structural body 1 is fixed to the inside of the cylinder 7. When exhaust gas is passed through this catalyst, it flows through the holes of the cells 6 of the honeycomb structural body 1 and is brought into contact with the honeycomb structures of honeycomb structural bodies 5a, 5b, namely catalytic components on the surfaces of plane sheets 2a, 2b and corrugated sheets 3a, 3b and purified.

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